R-1786

New CEM-3
Epoxy resin copper-clad laminate using glass fabric and
nonwoven glass fabric as base materials
■Features
●Excellent tracking resistance (CTI value for CEM-3
materials:600) can realize integration with power
supply circuits.
●Excellent in thickness accuracy.
Variations in board thickness are ±0.05 mm. This thickness
accuracy is approx. 3 times higher compared with the existing
composite copper-clad laminate.
●Excellent in high frequency characteristics.
Small dissipation factor and thickness variations can realize
designed performance.
(Double-sided copper-clad)
R-1786
(Single-sided copper-clad)
R-1781
●Provides dimensional stability equivalent to that of
glass epoxy (FR-4).
●Reduces CO2 emission amount in our manufacturing
process to one-quarter by means of our unique
manufacturing process. (Compared with our
conventional FR-4)
■Applications
●Liquid crystal television, PDP, PC peripheral
equipment, air conditioner, plumbing equipment, power
supply board, tuner, amusement machine, etc.
■Specifications(Assured values)
Standard size
(Warp × Fill)
Thickness tolerance
R-1786
Nominal thickness
Warpage, Twist
R-1781
Copper foil 0.018mm Copper foil 0.035mm Copper foil 0.018mm Copper foil 0.035mm
0.8mm
0.81±0.05mm 0.85±0.05mm 0.80±0.05mm
Including
+5
+3
1.0mm
1.00±0.05mm 1.04±0.05mm 0.99±0.05mm
1,020 ×1,025 mm
−0
−0
copper foil
+5
+3
1.2mm thickness. 1.15±0.05mm 1.19±0.05mm 1.14±0.05mm
1,220 ×1,025 mm
−0
−0
1.6mm
1.52±0.05mm 1.56±0.05mm 1.51±0.05mm
0.82±0.05mm
1.01±0.05mm
1.16±0.05mm
1.53±0.05mm
Single-sided Double-sided
≦10.0%
≦9.0%
≦7.0%
≦6.0%
≦2.5%
≦2.5%
≦2.5%
≦2.0%
Note:When thickness is measured at 10 positions according to Section 5.3.3 in JIS C6481, thicknesses of at least 9 positions are within the tolerance
range specified above. Thickness out of the tolerance range is within 125% of the above tolerance.
Note:For detail dimensions, please confer with us separately.
■General Properties
Test item
Volume resistivity
R-1786
Unit
MΩ・m
Surface resistance
MΩ
Insulation resistance
MΩ
−
Dissipation factor(1MHz)
−
Solder heat resistance(260℃)
second
Peel strength
Dielectric constant(1MHz)
N/mm
Copper foil:0.018mm(18μm)
Copper foil:0.035mm(35μm)
Heat resistance
Flexural strength (crosswise direction)
Water absorption
Flammability (UL method)
Alkali resistance
Punching workability
−
N/mm2
%
−
−
−
Treatment conditions
Actual value
C-96/20/65
C-96/20/65+C-96/40/90
C-96/20/65
C-96/20/65+C-96/40/90
C-96/20/65
C-96/20/65+D-2/100
C-96/20/65
C-96/20/65+D-24/23
C-96/20/65
C-96/20/65+D-24/23
A
A
S4
A
S4
A
A
E-24/50+D-24/23
A and E-168/70
Immersion
(3 minutes)
A
1×10
7
5×10
8
Guaranteed value
6
≧1×10
≧1×10
5
8
≧1×10
6
8
≧1×10
5
8
≧1×10
6
7
≧1×10
4
3×10
1×10
5×10
1×10
≦5.5
4.5
≦5.8
4.5
≦0.030
0.015
≦0.035
0.015
≧120
≧60
1.47
≧1.08
1.47
≧1.08
1.82
≧1.40
1.82
≧1.40
240℃60minutes No blister 200℃60minutes No blister
280
≧225
0.08
≦0.25
94V-0
94V-0
no abnormality
no abnormality
Suitable temperature:25℃
−
Note:Test piece thickness is 1.6 mm.
Note:The above tests are in accordance with JIS C6481. However, flame resistance is tested in accordance with UL94, and punching workability is in
accordance with our company’s testing method.
R-1786
■Characteristic graph (reference value)
■Time-dependent change of surface resistance(40℃、90%RH processing)
〈Comb pattern circuit width:0.64mm、Circuit interval:1.3mm〉
■Peel strength of copper foil
9
10
2.0
10
Bonding strength(N/mm)
Surface resistivity (MΩ)
8
7
10
6
10
5
10
4
10
copper foil thickness
0.018mm
+
plating thickness
0.030mm
1.5
copper foil thickness
0.018mm
1.0
0.5
3
10
0
5
10
15
0
20
50
100
150
200
250
Temperature(℃)
Number of days for processing
■Temperature characteristic of surface resistance
〈Comb pattern circuit width:0.64mm、Circuit interval:1.3mm〉
■Through hole reliability
●Test condition
Create test pieces by applying copper through hole processing
on test patterns, give the following thermal shocks, and
measure the number of cycles until disconnection occurs.
9
10
Surface resistivity(MΩ)
8
10
●Example
7
10
Number of cycles to break
6
10
5
X1
X2
X3
X
60
69
66
65
10
260℃ oil
10 seconds
immersion
4
10
3
20℃ water
10 seconds
immersion
air blow
10
20
40
60
80
100
1cycle
120
Temperature(℃)
■Frequency characteristic of dielectric constant(IPC TM-650 2.5.5.9)
■Thermal expansion and contraction rates(Dilatometer method)
〈150℃ scale〉
0.4
5.0
Dimensional variation ratio(%)
Dielectric constant
4.5
4.0
50
100
200
500
1,000
Y-axis
X-axis
0.3
0.2
0.1
0
X-axis
Y-axis
Expansion rate(%) 0.252
0.295
Contraction rate(%) 0.020
0.030
-0.1
-0.2
30
50
70
Frequency
(MHz)
90
110
130
150
Temperature(℃)
■Frequency characteristic of dissipation factor (IPC TM-650 2.5.5.9)
■Thermal expansion and contraction rates(TMA method)
〈150℃ scale〉
1.5
Dissipation factor
Dimensional variation ratio(%)
0.02
0.01
50
100
200
Frequency
(MHz)
500
1,000
1.0
0.5
0
Z-axis
-0.5
30
50
70
90
Expansion rate(%)
1.00
Contraction rate(%)
0.45
110
Temperature(℃)
130
150
R-1786
■Tracking resistance (IEC method)(0.1% NH4Cl)
■Inner wall roughness〈60,000rpm 0.05mm/rev 3 ply〉
〈Electrode (platinum) interval〉
140
0.04
Number of dripping
Inner wall roughness(mm)
120
100
80
60
40
20
0
100
200
300
400
500
0.03
0.02
0.01
0
600
1,000
3,000
5,000
Applied voltage(V)
10,000
hit
■Dimensional variation ratio(plate thickness 1.6mm copper foil thickness 0.018mm)
Size:305mm(X-axis)×280mm(Y-axis)/Span:270mm(X-axis), 260mm(Y-axis)
■Punching characteristic(Punching temperature25℃)
Dimensional variation ratio(%)
0.02
●X-axis
Maximum dynamic shearing stress
N/mm2
Maximum dynamic pull-out stress
N/mm2
0.01
○Y-axis
161.7
46.1
※Punching temperature is equal to the board's surface temperature.
0
-0.01
●
○
●
-0.02
○
-0.03
-0.04
After etching
(E-0.5/80)
After heating
(E-0.5/170)
■Dimensional variation ratio(Processing steps plate thickness 1.6mm copper foil thickness 0.018mm)
Size:305mm(X-axis)×280mm(Y-axis)/Span:270mm(X-axis), 260mm(Y-axis)
●X-axis
0.01
○Y-axis
0
Accuracy level
Dimensional variation ratio(%)
0.02
■thickness accuracy board thickness 1.6mm copper foil thickness 0.018mm 〈x=1.52mm R=0.053mm v=0.014mm〉
-0.01
-0.02
-0.03
150
100
50
-0.04
After plating
After etching
After SR
printing
0
130℃ 15minutes
3times
■Drill wear resistance
Drill φ0.6mm UC35 Number of rotations 60,000rpm
Feed rate 0.035mm/rev Entry boards:Aluminum(0.15mm)
Backup board:Bakelite plate thickness:1.6mm Copper foil 0.018mm 3 ply
1.45
1.50
1.55
plate thickness
(mm)
■Hole diameter contraction after punching(Punching temperature:25℃ R-1581)
0.17
60
Contraction amount(mm)
Drill edge wear rate (area ratio)(%)
70
50
40
30
20
10
0.16
0.15
0.14
0.13
0.12
0.11
0.10
0.09
2,000
4,000
6,000
hit
8,000
10,000
0.8
0.9
1.0
1.1
1.2
1.3
1.4
Nominal pin diameter(mm)
1.5